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tm - Technisches Messen

Plattform für Methoden, Systeme und Anwendungen der Messtechnik

[TM - Technical Measurement: A Platform for Methods, Systems, and Applications of Measurement Technology
]

Editor-in-Chief: Puente León, Fernando / Zagar, Bernhard

12 Issues per year


IMPACT FACTOR 2016: 0.348

CiteScore 2016: 0.28

SCImago Journal Rank (SJR) 2016: 0.241
Source Normalized Impact per Paper (SNIP) 2016: 0.343

Online
ISSN
2196-7113
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Volume 83, Issue 2 (Feb 2016)

Issues

Improving optical sorting of bulk materials using sophisticated motion models

Verbesserung der optischen Schüttgutsortierung mittels verfeinerter Bewegungsmodelle

Florian Pfaff
  • Corresponding author
  • Intelligent Sensor-Actuator-Systems Laboratory, Karlsruhe Institute of Technology (KIT), Germany
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/ Christoph Pieper / Georg Maier / Benjamin Noack / Harald Kruggel-Emden / Robin Gruna / Uwe D. Hanebeck / Siegmar Wirtz / Viktor Scherer / Thomas Längle / Jürgen Beyerer
Published Online: 2016-02-09 | DOI: https://doi.org/10.1515/teme-2015-0108

Abstract

Visual properties are powerful features to reliably classify bulk materials, thereby allowing to detect defect or low quality particles. Optical belt sorters are an established technology to sort based on these properties, but they suffer from delays between the simultaneous classification and localization step and the subsequent separation step. Therefore, accurate models to predict the particles' motions are a necessity to bridge this gap. In this paper, we explicate our concept to use sophisticated simulations to derive accurate models and optimize the flow of bulk solids via adjustments of the sorter design. This allows us to improve overall sorting accuracy and cost efficiency. Lastly, initial results are presented.

Zusammenfassung

Visuelle Eigenschaften sind mächtige Merkmale zur Klassifikation von Schüttgütern, auf Basis derer man defekte oder unbrauchbare Teilchen erkennen kann. Die Verwendung optischer Bandsortieranlagen ist eine etablierte Technik zur Sortierung basierend auf diesen Merkmalen. Derartiger Sortierer leiden jedoch unter Verzögerungen zwischen der gleichzeitigen Klassifikation und Lokalisierung und der darauffolgenden Separation. Dadurch entsteht die Notwendigkeit für akkurate Modelle der Teilchenbewegung, mittels derer diese Lücke überbrückt werden kann. In dieser Veröffentlichung stellen wir unser Konzept vor, mittels hochentwickelter Simulationen genaue Modelle herzuleiten und den Teilchenstrom durch Optimierungen im Design des Sortierers zu verbessern. Dies ermöglicht die Verbesserung der Sortiergüte und Kosteneffizienz. Abschließend präsentieren wir erste Ergebnisse.

Keywords: Computational fluid dynamics; discrete element method; multi-object tracking; optical sorting

Schlagwörter: Diskrete Elemente Methode; Multi-Object Tracking; Numerische Strömungsmechanik; Optische Sortierung

About the article

Florian Pfaff

Florian Pfaff is a research assistant at the Intelligent Sensor-Actuator-Systems Laboratory at the Karlsruhe Institute of Technology. His research interests include a variety of estimation problems such as nonlinear filtering, multitarget tracking, and estimation in the presence of both stochastic and non-stochastic uncertainties.

Intelligent Sensor-Actuator-Systems Laboratory, Karlsruhe Institute of Technology, Adenauerring 2, 76131 Karlsruhe, Germany, Tel.: +49-721-608-48831

Christoph Pieper

Christoph Pieper is a research assistant at the Department of Energy Plant Technology at the Ruhr University Bochum. His research interests include numerical simulation of fluidized particle systems with the Discrete Element Method (DEM) and Computational Fluid Dynamics (CFD).

Department of Energy Plant Technology, Ruhr-Universität Bochum, Universitätsstraße 150, 44780 Bochum, Germany, Tel.: +49-234-32-23502, Fax: +49-234-32-14227

Georg Maier

Georg Maier is with the Fraunhofer Institute of Optronics, System Technologies and Image Exploitation (Fraunhofer IOSB), Karlsruhe, Germany, working in the field of visual inspection systems for automated sorting of bulk goods. His research interests include different aspects of image processing, in particular algorithmic aspects, with a focus on real-time capabilities.

Fraunhofer IOSB, Fraunhoferstraße 1, 76131 Karlsruhe, Germany, Tel.: +49-721-6091649

Benjamin Noack

Benjamin Noack is a postdoctoral researcher at the Intelligent Sensor-Actuator-Systems Laboratory at the Karlsruhe Institute of Technology. His research interests include a variety of estimation problems such as nonlinear filtering, distributed and decentralized estimation for sensor networks, and estimation in the presence of both stochastic and non-stochastic uncertainties.

Intelligent Sensor-Actuator-Systems Laboratory, Karlsruhe Institute of Technology, Adenauerring 2, 76131 Karlsruhe, Germany, Tel.: +49-721-608-44024

Harald Kruggel-Emden

Harald Kruggel-Emden is assistant professor and principal investigator of an Emmy-Noether Research Group at the Department of Energy Plant Technology at the Ruhr University Bochum. His research interests include Discrete Element Modelling with coupled fluid flow, material preparation and drying technology, bulk solids handling, and chemical looping combustion.

Department of Energy Plant Technology, Ruhr-Universität Bochum, Universitätsstraße 150, 44780 Bochum, Germany, Tel.: +49-234-32-27362, Fax: +49-234-32-14227

Robin Gruna

Robin Gruna is research group manager at the Fraunhofer Institute of Optronics, System Technologies and Image Exploitation IOSB in Karlsruhe. His research interests include hyperspectral imaging, machine vision, computational illumination and chemometrics.

Fraunhofer IOSB, Fraunhoferstraße 1, 76131 Karlsruhe, Germany, Tel.: +49-721-6091263

Uwe D. Hanebeck

Uwe D. Hanebeck is a chaired professor of Computer Science at the Karlsruhe Institute of Technology (KIT) in Germany and director of the Intelligent Sensor-Actuator-Systems Laboratory (ISAS). Since 2005, he is the chairman of the Research Training Group RTG 1194 “Self-Organizing Sensor-Actuator-Networks” financed by the German Research Foundation. His research interests are in the areas of information fusion, nonlinear state estimation, stochastic modeling, system identification, and control with a strong emphasis on theory-driven approaches based on stochastic system theory and uncertainty models. Research results are applied to various application topics like localization, human-robot-interaction, assistive systems, sensor-actuator-networks, medical engineering, distributed measuring systems, and extended range telepresence.

Intelligent Sensor-Actuator-Systems Laboratory, Karlsruhe Institute of Technology, Adenauerring 2, 76131 Karlsruhe, Germany, Tel.: +49-721-608-43909

Siegmar Wirtz

Siegmar Wirtz is the deputy head of the Department of Energy Plant Technology at the Ruhr University Bochum. His research interests include numerical simulation of reactive gas-solid flows, extension of commercial CFD-Codes, and Discrete Element Modelling with coupled fluid flow.

Department of Energy Plant Technology, Ruhr-Universität Bochum, Universitätsstraße 150, 44780 Bochum, Germany, Tel.: +49-234-32-26325, Fax: +49-234 32 14227

Viktor Scherer

Viktor Scherer is the head of the Department of Energy Plant Technology at the Ruhr University Bochum. His research interests include energetic conversion of fossil fuels and biomass as well as industrial applications and experimental and theoretical investigation of energy and high temperature processes.

Department of Energy Plant Technology, Ruhr-Universität Bochum, Universitätsstraße 150, 44780 Bochum, Germany, Tel.: +49-234-32-26328, Fax: +49-234-32-14227

Thomas Längle

Thomas Längle is adjunct professor at the Karlsruhe Institute of Technology (KIT), Karlsruhe, and the head of the business unit “Vision Based Inspection Systems” (SPR) at the Fraunhofer IOSB in Karlsruhe, Germany. His research interests include different aspects of image processing and real-time algorithms for inspection systems.

Fraunhofer IOSB, Fraunhoferstraße 1, 76131 Karlsruhe, Germany, Tel.: +49-721-6091212

Jürgen Beyerer

Jürgen Beyerer is full Professor for Informatics at the Institute for Anthropomatics and Robotics at the Karlsruher Institut für Technologie KIT and Head of the Fraunhofer Institute of Optronics, System Technologies and Image Exploitation IOSB in Karlsruhe, Ettlingen, Ilmenau, and Lemgo. His research interests include automated visual inspection, optimal acquisition of image data, image processing, statistical signal theory, metrology, information theory, fusion of data and information from heterogeneous sources, active vision, variable image acquisition and processing, system theory, machine learning, and Industry 4.0.

Fraunhofer IOSB, Fraunhoferstraße 1, 76131 Karlsruhe, Germany, Tel.: +49-721-6091210


Revised: 2015-12-11

Accepted: 2015-12-16

Received: 2015-11-24

Published Online: 2016-02-09

Published in Print: 2016-02-28


Citation Information: tm - Technisches Messen, ISSN (Online) 2196-7113, ISSN (Print) 0171-8096, DOI: https://doi.org/10.1515/teme-2015-0108.

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